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Debt (Schedule of Debt Instruments) (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 30, 2022 | Dec. 31, 2021
Debt Instrument [Line Items] |  |
Total debt, including current portion | $ 95,974 | $ 193,489
Series B maturing Paid January 2022 |  |
Debt Instrument [Line Items] |  |
Average interest rate | 5.01% |
Debt Instrument, Maturity Date, Description | January 2022 |
Total debt, including current portion | $ 0 | 75,000
Series D maturing July 2026 |  |
Debt Instrument [Line Items] |  |
Average interest rate | 5.35% |
Debt Instrument, Maturity Date, Description | July 2026 |
Total debt, including current portion | $ 75,000 | 75,000
Revolving Credit Facility |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Maturity Date, Description | March 2026 |
Total debt, including current portion | $ 0 | 0
Chinese Renminbi Revolving Credit Facility [Member] |  |
Debt Instrument [Line Items] |  |
Average interest rate | 3.34% |
Total debt, including current portion | $ 14,327 | 39,222
Notes payable to banks maturing 2023 |  |
Debt Instrument [Line Items] |  |
Average interest rate | 2.80% |
Debt Instrument, Maturity Date, Description | 2023 |
Total debt, including current portion | $ 6,647 | $ 4,267
Line of Credit | Committed Facility | Minimum | Revolving Credit Facility | Cash flow leverage ratio no acquisition |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Covenant Compliance | 1.00 |
Line of Credit | Committed Facility | Minimum | Revolving Credit Facility | Cash flow leverage ratio with acquisitions |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Covenant Compliance | 1.00 |
Line of Credit | Committed Facility | Minimum | Revolving Credit Facility | Interest coverage ratio no acquisitions |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Covenant Compliance | 1.00 |
Line of Credit | Committed Facility | Minimum | Revolving Credit Facility | Interest coverage ratio with acquisitions |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Covenant Compliance | 1.00 |
Line of Credit | Committed Facility | Maximum | Revolving Credit Facility | Cash flow leverage ratio no acquisition |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Covenant Compliance | 3.50 |
Line of Credit | Committed Facility | Maximum | Revolving Credit Facility | Cash flow leverage ratio with acquisitions |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Covenant Compliance | 4.00 |
Line of Credit | Committed Facility | Maximum | Revolving Credit Facility | Interest coverage ratio no acquisitions |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Covenant Compliance | 3.00 |
Line of Credit | Committed Facility | Maximum | Revolving Credit Facility | Interest coverage ratio with acquisitions |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Covenant Compliance | 2.50 |

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